Fountain pen



A F. W. VAUGHN FOUNTAIN PEN Fned Aug. '7, 1922 ATTORNEYS provements;

Patented Sept. 9, i924.

FRANCIS W. VAUGHN, OF llEDFORD, MASSACHUSETTS, ASSIG'NOE T0 VAUGHN-UPTON COMPANY, 0F BOSTON, MASSACHUSETTS, vA. CORPORATTON 0Fy MASSACHUSETTS.

FOUNTAIN PEN.

,Application led. August 7, 1922. Serial No. 580,324.

To all whom t 'may concern:

Be it known that LlizArToIs W. VAUGHN, a citizen of the United States, residing at yMedford, in the county of Middlesexand State of Massachusetts, have invented certain new and useful Improvementsu in Fountain Pens, of fica-tion.

My invention is an improvement in fountain` pens of the v(so-called) self-lling type, in which the air wit-hin the fountain is rarefied, while the pen end of the fountain is submerged in ink, thus causing a influx of ink into the barrel until the 'air balance is LAent to De La Rue, No. 926,61Lfdatediflune 29, 1909. In the drawings: Figure l is a longitudinal, sectional elevation of a fountain pen embodying my im- Figures 2, 3, 1i, 5 and 6 are cross' sections on lines 2 2; 3 3; 4-45 5-55 and 6*(5 respectively, of Figure 1; f y

Figure 7 is a longitudinal sectional elevation of the cylinder of the sleeve member;

and

sure and cone.

In fountain pens of the self-filling type, in l `which moving parts must be fitted within the barrel of the pen to be actuated to cause the barrel to fill with ink, many pens which are theoretically perfect as a matter of illustration and of description, are perfectly impractical, owing to the fact that, in the actual manufacture of a real pen, the interior dimensions of the pen are too small to permit the fitting and placement of the designed parts or the accuracy of finish which is called for, within the limits of a commercial selling price.

My invention is designed to make a practical pen, which can be manufactured as a commercial proposition, all parts calling for accurate finish being outside surfaces, easily reached, the parts themselves being few in number and assembled and disassembled easily and quickly and those parts which may wear in use being easily adjusted to compensate for wear or easily and cheaply repaired or replaced if desired or necessary.,

which thefollowing is a speciln the followingdescrption, when l refer to the front end Yof the pen itvisi'to be understood that .lmean the end in which is mounted the gold pen point and when Ire fer to the rear7 end of the pen it is to be understood that l refer to the opposite end of the pen. l i i ln Figure l is shown a longitudinal sectional elevation of a' pen embodying my im- `proveme-nt, in which A is the barrel or fountain, formed, preferably, at its rear end, with a reduced portion A. At the junction point of the two diameters is a screw thread.

surface a. rlhe outer surface of A .may be machine worked to give a true outer cylindrical cross-section of a glassy smoothness. The rear end of A" is closed by a cap 0f screw threadedy thereto, having an aperture b, pr'eferablyf'central, "in which is secured `f one end of a pipe B. rlhe front end of A is closed by a pen section @carrying the usual feed bar llwhich has the usual ink fissures d and also has an aperture ZJ. The front end of pipe B is lpreferably slightly tapered and when the parts are assembled the taf pered end of B enters aperture bawhich then forms a continuation of pipe B, out of the fountain. The air passage constituted by pipe B and aperture b it will be observed passes to the outside` ofthe barrel at both ends.

Slid'ably mounted on the rear end of the fountain or barrel is a sleeve E closed ait one endvby a cap, c, having a conse and the sleeve E is also linteriorily `threaded at the other end, at e, to'coact with the threads at a. This sleeve'E carries 'within it a gland' made up of'two screw-threaded`washers, y", enclosing a packing f of cork or other suitable material. These washers engage the threads e and may be screwed towardone another to compress the packingf. Atthe outer end of A and close to cap a is an aperture 64 leading to the interior of A and putting the interior of the barrel into communication with the interior of sleeve E.

rlhe operation is as follows: The parts being assembled as in Figure l. to lill, the front end of the pen section C is submerged in ink, and the sleeve E, being first unscrewed at a, c, is drawn rearward. The effect of this unscrewing action is to release the sleeve E from its engagement with the barrel and also to remove the cone e from the aperture b in cap The rearwardmovement of sleeve E, creates al partial v'aciiurh in the sleeve and air passes from the barrel through aperture 60 to the interior of they sleeve E, correspondingly attenuati'ng the air in the barrel. No air of course ca'n enter the barrel from the outside either at thefront end or the rear end or the pen, and the attenuation of the air within thebarr/el,l below atmospheric pressure, causes ink to be forced into the barrel by atmospheric pressure through ink fissure d' in feed bar- D. Upon reversal of the movementy of sleeve E, air within the sleeve is expelled from they sleeve E to the outer air through. pipe B., passing through the rear endof the barrel to and through the pipe and through th'e aperture b to the air. This action*V isrepeat'ed, if desired, until all theair in the bar-- rel has been drawn from the; barrel into the sleeve and expelled throughI pipe- B., the place-.ofthe air in the barrelb'eingtakenf by ink forced into the barrel by at-niosph'eri'cV pressure. Itis true that upon the rearward stroke ofv sleeve E some ink will rise into the airvpipe B, but upon forcing the sleeve E forward the air is compressed insleeve E, barrel' and pipe B and the inl; inthe airv pipegds expelled, followed by some air. Atj the. same ti'mesome ink. is expelled `from the barrel through the ink fissure, d, but, as only inlf can enter, the expelled air and any expelled inki is replaced at the next rearward stroke of sleeve E, by ink, so that thev barrel is shortly evacuated ofv air which is replaced with ink. i. When the lling operation is completed; the sleeve is again engaged with the barrel by screw threads a, e, and as the sleevey is` is screwed onto the barrel, the cone e" seats in the cap aperturer ZJ, thus sealing the rear end of air pipe B. v L In 'fountain pens having two separate and distinct passages for air expulsion andl ink intake, no part of which passages are in common, as is the case in my improved pen, it is essential that means be provided for seal* ing` the airy expulsion lube'*whene the pen is not being lilled, otherwise in the act of writing, the air would pass up the air tube to the upper end of the harrel ahjve thec'ontai'ned ink in` the barrel, and this" inltv would then flow by Agravity through the ink fissure out of the barrel. By sealing the rear end of the air pipe,` afterthepen is filled, as the ink is used up in the writing operation, the air necessary to relieve the partial vacuum withinthe barrel thus created, must: feed up, through .the inl; fissures, in bubbles,l as is thel standard practicel in pens having no' air nipe'.

lY claim l Y 1*.' ln a fountain pen, a barrel,r having at its rear end an air aperture and having also' a seeondapert-ure at its near end; a pen seo tion"A seated in thefront end ofthe barrel and havingseparate ink and air apertures therethrough 51 a' pipei within the barrel,y connecting the pen section air aperture with arear 1 aperture to form an air passage through the barrel a sleeve closed at its're'ar end and fitting-.airtight and slidable upon, therear end ofthe barrel, to; withdraw air fromY thel barrel through the second rear air aperture into the; .sleeve upon the rearward .stroke and expel it through the pipe on the for ward stroke.

.2.. Asy in claim 1,1th'e rear end closure of the sleeve being adapted to seal the rear end of the air pipe air-tight when the sleeve is ingitsylorward position. l Y l 3. As in claim l.,- the sleeve having within its closed rear end aeonical member to seal theV rear end of tfheair pipe air-,tight when thek sleeve isin itsxorward, position. y

t. As in claim 2, the sleeve having at vits open inner lend', screw ,threads to engage screw threads on the barrel, and draw and hold thel rearend of the sleeve to thel rear endf of thelbarrel. K Y i Signed at Boothbayl Harbor, Maine, this twenty sixth (26th) day of July, 1922.

renners: w. VAUGHN, 

